2. Tentukan penjumlahan bentuk aljabar berikut! a. -3m + 4n - 6 dengan 7n - 8m + 10 b. 15a + 7b - 5c dengan - 11a - 12b + 13d 3. Tentukan pengurangan bentuk alj

2.
A). (-3m+4n-6) + (7n-8m+10)
= -3m+4n-6+7n-8m+10
= -3m-8m+4n+7n-8+10
= -11m+11n+2

B). (15a+7b-5c) + (-11a+12b+13d)
= 15a+7b-5c-11a+12b+13d
= 15a-11a+7b+12b-5c+13d
= 4a+19b-5c+13d

3.
A). (-3m+4n-6) - (7n-8m+10)
= -3m+4n-6-7n+8m-10
= -3m+8m+4n-7n-6-10
= 5m-3n-16

B).(15a+7b-5c) - (-11a+12b+13d)
= 15a+7b-5c+11a-12b-13d
= 15a+11a+7b-12b-5c-13d
= 26a-4b-5c-13d